100% cpu usage problems

I keep having problems with 100% cpu usage. The phone will get really slow and not respond. Only does it for bout 10 min then the notification goes away. I have watchdog and its not telling me that apps are using over 40%. Not sure what to do here. This is also my 3rd one in a month. First one the antenna quit and the second one the speakers stopped working within a day. Any help would be nice. Oh I have the same apps on this one I did with my first one and never had a problem like this.

Surprising seeing you have a 1.2 Ghz processor. There is a app called fast reboot (free). It always helps me when my phone gets slow it will free up 150mb of ram in my case. Also can you overclock or change the voltage? That helps too

Im not rooted yet. Im getting really close to rooting with z4 though. Ya I know i didnt have this problem with my original d2g. I use restaurant story and bakery story at the same time and it goes to 100% usage. My gf uses the same stuff on her droid X and doesn't have a problem. My battery doesn't get hot or anything either. It just runs really slow for a min or 2 after I shut down the programs.

I would suggest not rooting until you figure out the problem. When that happens go to menu, manage apps, running apps and see what's going on. You may be able to get to it before the processes are shut down to see what's using the memory. Good luck!